QGraphicsScene，QGraphicsView和QVBoxLayout（）问题
大家问候，
每当我运行它时，Qt Creator就会停止工作，当我注释掉线路时
//mainWindow = new MainWindow();
QGraphicsScene
QGraphicsView
QVBoxLayout
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent), keydown_left(false), keydown_right(false),scene(NULL), view(NULL)
{
qDebug("MainWindow");
//mainWindow = new MainWindow();
//qsrand(QTime(0,0,0).secsTo(QTime::currentTime()));
scene = new QGraphicsScene(mainWindow);
view = new QGraphicsView(scene, mainWindow);
scene->setSceneRect(-300, 0, 640, 360);
scene->setItemIndexMethod(QGraphicsScene::NoIndex);
Egg *egg = new Egg();
QVBoxLayout *layout = new QVBoxLayout();
for (int i = 0; i < ObjCount; ++i) {
FlyingObj *Fo= new FlyingObj();
Fo->setPos(::sin((i * 6.28) / ObjCount) * 500,
::cos((i * 6.28) / ObjCount) * 500);
scene->addItem(Fo);
}
egg->setPos((640-64)/2, 100);//16 - 2*16
scene->addItem(egg);
view->setRenderHint(QPainter::Antialiasing);
view->setBackgroundBrush(QPixmap(":/bg.jpg"));
//view->setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate);
view->setDragMode(QGraphicsView::NoDrag);
view->setWindowTitle(QT_TRANSLATE_NOOP(QGraphicsView, "Egg game"));
view->resize(640, 360);
QObject::connect(scene, SIGNAL(keyPressEvent(QKeyEvent)), this, SLOT(keyPressEvent(QKeyEvent)));
view->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
view->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
view->setFrameStyle(QFrame::NoFrame);
view->setFocusPolicy(Qt::NoFocus);
view->setCacheMode(QGraphicsView::CacheBackground);
view->showFullScreen();
layout->addWidget(view);
QWidget *w = new QWidget();
w->setLayout(layout);
}
没有找到相关结果
已邀请:
1 个回复
催备南菠亨
int main(int argc, char *argv[]) { QApplication a(argc, argv); MainWindow w; w.show(); return a.exec(); }layout->addWidget(view); QWidget *w = new QWidget(); w->setLayout(layout);